Question

Restriction endonucleases are most widely used in recombinant DNA technology. From where are they obtained from?

• A. Bacteriophages
• B. Bacterial cells
• C. Plasmids
• D. All eukaryotic cells

Answer 1

The correct option is B Bacterial cells

Restriction endonucleases are called as molecular scissors. It is because of the special feature of these enzymes to cut at desired sites of DNA in the technique of genetic engineering. These enzymes are found in bacteria and archaea and provide a defense mechanism against invading viruses. Hence option B is correct.